Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea93168b9bf3469d…

MALICIOUS

PDF

51.3 KB Created: 2020-09-08 07:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49a487ee58edc034fe5a44246eff93bd SHA-1: 2e3034d47f3cbe43707aeaacc83e367a8195a271 SHA-256: ea93168b9bf3469dcb91da70936402f67681060457219043cc0cbe6986e86291
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits malicious behavior through its extensive use of external links, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.link/wix?keyword=anuraga+devatha+telugu+audio+songs, which likely serves as a redirector to a malicious site. The document body contains garbled text but also includes the same redirector URL and a benign-looking PDF URL, suggesting an attempt to obscure the malicious intent. No scripts were extracted, but the link farm structure points towards a delivery mechanism for further malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.link/wix?keyword=anuraga+devatha+telugu+audio+songs
    • https://static.usrfiles.com/ugd/45e30f_029442bafb45473e90b75d8a352f60cd.pdf
    • https://static.usrfiles.com/ugd/10e3af_250947a077a84ae3b3307fe299296551.pdf
    • https://static.usrfiles.com/ugd/5af86b_5090de344a1b453083657ce393838f85.pdf
    • https://static.usrfiles.com/ugd/221f3a_fa65676ee7a14578b143900873cffe8e.pdf
    • https://static.usrfiles.com/ugd/3f8d85_912f836f00ee4c90aa63e14070110fcc.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6235/files/nusivapefuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6130/4727/files/19600255665.pdf
    • https://cdn.shopify.com/s/files/1/0429/5625/9491/files/fiwojufiwovolijaxodu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/33615397304.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/dojapavabug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/kefedabese.pdf
    • https://cdn.shopify.com/s/files/1/0432/0762/2817/files/balma_film_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/7608493696.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/tafiketozedam.pdf
    • https://cdn.shopify.com/s/files/1/0465/4576/4510/files/emma_king_eczema_clinic.pdf
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/nurozikagalobar.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4490/files/53137202052.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008241.bin
e673ffa979065d28afd7e19af0a7c4d926a4ea04d3f10a1a9f48133c3cd930fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8241 5136 bytes
font_01_sfnt_off000093bb.bin
2b6767cb414fd15b32bdec1d51f8fa0db0ddc2ba19e908e072dbaea1088447f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x93BB 14116 bytes